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NVD / CVE Program· CNA Linux

CVE-2022-49845: can: j1939: j1939_send_one(): fix missing CAN header initialization

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.21% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 2719f82ad5d8199cf5f346ea8bb3998ad5323b72, 3eb3d283e8579a22b81dd2ac3987b77465b2a22f, 69e86c6268d59ceddd0abe9ae8f1f5296f316c3c.

Low priority for now. Upgrade to Linux Linux 2719f82ad5d8199cf5f346ea8bb3998ad5323b72, 3eb3d283e8579a22b81dd2ac3987b77465b2a22f, 69e86c6268d59ceddd0abe9ae8f1f5296f316c3c or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: can: j1939: j1939_send_one(): fix missing CAN header initialization The read access to struct canxl_frame::len inside of a j1939 created skbuff revealed a missing initialization of reserved and later filled elements in struct can_frame. This patch initializes the 8 byte CAN header with zero.

MediumCVSS 5.5 · v3.1—No exploit Fix available
Published
May 1, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 12th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
22 / 40 · 5.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2022-49845

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel5.4 and later · before 5.4.225
  • linux linux kernel5.5 and later · before 5.10.155
  • linux linux kernel5.11 and later · before 5.15.79
  • linux linux kernel5.16 and later · before 6.0.9
  • linux linux kernel6.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 5.4affected
    • 9d71dd0c70099914fcd063135da3c580865e924c and later · before d0513b095e1ef1469718564dec3fb3348556d0a8affected · git
    • 9d71dd0c70099914fcd063135da3c580865e924c and later · before f8e0edeaa0f2b860bdbbf0aafb4492533043d650affected · git
    • 9d71dd0c70099914fcd063135da3c580865e924c and later · before 69e86c6268d59ceddd0abe9ae8f1f5296f316c3caffected · git
    • 9d71dd0c70099914fcd063135da3c580865e924c and later · before 2719f82ad5d8199cf5f346ea8bb3998ad5323b72affected · git
    • 9d71dd0c70099914fcd063135da3c580865e924c and later · before 3eb3d283e8579a22b81dd2ac3987b77465b2a22faffected · git
    • before 5.4not affected · semver
    • 5.4.225 and later · up to and including 5.4.*not affected · semver
    • 5.10.155 and later · up to and including 5.10.*not affected · semver
    • 5.15.79 and later · up to and including 5.15.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:9kernelbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64kbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debugbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debug-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debug-develbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debug-devel-matchedbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debug-modulesbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debug-modules-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-debug-modules-extrabefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-develbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-devel-matchedbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-modulesbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-modules-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-64k-modules-extrabefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-abi-stablelistsbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-cross-headersbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-debugbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-debug-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-debug-develbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-debug-devel-matchedbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-debug-modulesbefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7
AlmaLinux:9kernel-debug-modules-corebefore 5.14.0-611.5.1.el9_75.14.0-611.5.1.el9_7

+96

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2022-49842May 1, 2025 · ASoC: core: Fix use-after-free in snd_soc_exit()
    31Monitor
  • ← EarlierCVE-2022-49844May 1, 2025 · can: dev: fix skb drop check
    28Monitor
  • Later →CVE-2022-49846May 1, 2025 · udf: Fix a slab-out-of-bounds write bug in udf_find_entry()
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux2719f82ad5d8199cf5f346ea8bb3998ad5323b72Vendor (CNA)
Linux Linux3eb3d283e8579a22b81dd2ac3987b77465b2a22fVendor (CNA)
Linux Linux69e86c6268d59ceddd0abe9ae8f1f5296f316c3cVendor (CNA)
Linux Linuxd0513b095e1ef1469718564dec3fb3348556d0a8Vendor (CNA)
Linux Linuxf8e0edeaa0f2b860bdbbf0aafb4492533043d650Vendor (CNA)
almalinux:kernel5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-core5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-core5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-devel-matched5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-core5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-debug-modules-extra5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
almalinux:kernel-64k-devel-matched5.14.0-611.5.1.el9_7 · AlmaLinux:9Package registry (OSV)
debian:linux6.0.10-1 · Debian:12Package registry (OSV)
red hat:kernel-64k-debug-debuginfo0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debug-devel-matched0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-debuginfo0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-64k-devel-matched0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-debuginfo0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debug-devel-matched0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debuginfo0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debuginfo-common-aarch640:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:kernel-debuginfo-common-ppc64le0:5.14.0-611.5.1.el9_7 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)

+1

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2024-50302163 days apartHID: core: zero-initialize the report bufferKEV
    52Plan
  • CVE-2026-52989419 days apartnvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers
    39Monitor
  • CVE-2024-47685192 days apartnetfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put()
    36Monitor
  • CVE-2026-53225420 days apartsctp: fix uninit-value in __sctp_rcv_asconf_lookup()
    36Monitor
  • CVE-2026-53170420 days apartaccel/ethosu: reject DMA commands with uninitialized length
    35Monitor
  • CVE-2026-43139370 days apartxfrm6: fix uninitialized saddr in xfrm6_get_saddr()
    34Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-908 · Use of Uninitialized Resource

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (4 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records